<p>
Appending <code>String.valueOf()</code> to a <code>String</code> decreases the code readability.
The argument passed to <code>String.valueOf()</code> should be directly appended instead.
</p>

<p>The following code:</p>

<pre>
public void display(int i){
  System.out.println("Output is " + String.valueOf(i));    // Noncompliant
}
</pre>

<p>should be refactored into:</p>

<pre>
public void display(int i){
  System.out.println("Output is " + i);                    // Compliant
}
</pre>
